加劲肋加强T型方管相贯节点抗震性能分析  

Seismic Performance Analysis of Rib Stiffener Strengthen T-type RHS Tubular Joints

作　　者：刘远征[1] 袁波[1] 宋志丹[1] 

机构地区：[1]贵州大学空间结构研究中心,贵州贵阳550003

出　　处：《贵州大学学报（自然科学版）》2015年第6期112-117,共6页Journal of Guizhou University:Natural Sciences

基　　金：国家自然科学基金项目资助(51168010)

摘　　要：为了研究加劲肋加强T型方管相贯节点的抗震性能,本文用有限元分析软件ABAQUS对有加劲肋和无加劲肋的T型方管相贯节点进行滞回性能对比分析,通过变换加劲肋的宽度bw和厚度tw分析参数η（bw/D）和τ（tw/T）对节点耗能能力的影响。结果表明：加劲肋加强节点的极限承载力是无加强作用普通相贯节点的2~5倍,加劲肋在提高节点承载力作用上效果明显,无加强普通节点延性系数为1.6,而加劲肋节点延性系数为2~3之间,加劲肋可以改善节点的延性。加劲肋加强节点的滞回曲线比无加强普通相贯焊接节点的滞回曲线更加饱满,设置加劲肋使节点的耗能性能大大提高。In order to study the seismic performance of rib stiffeners strengthen T-type RHS tubular joints, a comparative analysis of hysteretic behavior of rib stiffeners strengthen and no strengthen T-type RHS tubular joints was carried out by finite element analysis software ABAQUS, research on effects of rib stiffener parameters η （ bw/ D） and τ（tw/T） to energy dissipation capacity of joints was carried out by transforming the width of rib stiffener bw and the thickness of rib stiffener tw. The results show that： the ultimate bearing capacity of rib stiffeners strengthen joints was 2 -5 times of no strengthen common bearing capacity of joints effectively, the ductility of no stre tubular joints, rib stiffener can improve the ultimate ngthen common joints was however the ductility of rib stiffener strengthen joints was 2 - 3, so rib stiffener improved ductility of joint. Hysteretic curve of rib stiffener strengthen joints were more plumpness than no strengthen common tubular joints, the setting of rib stiffener improved the energy dissipation ability of joints greatly.

关 键 词：加劲肋 T型方管节点 延性系数 抗震性能 有限元分析 

分 类 号：TU392.3[建筑科学—结构工程]